Remove unused league_of_legends.css file and update index.html (#15)

Refactor website (#14)

* Refactor CSS variables for consistency and readability

* Format code and add super linter

* Update copyright year to 2024

* Setup v2

* Replace `'` with `"`

* Removed old JS code

* Add script to load champions dynamically

* Refactor language selection logic in main.js

* Add script to load champions dynamically

* Refactor CSS styles for champion cards

* Add search functionality

* Lint CSS

* Make search bar more responsive

* Resize header because it was smaller than the search bar

* Rename variables for better maintainability

* Add modal functionality

* Use champion id to open modal

* Remove background scrolling when modal is opened

* Add champion abilities rendering

* Refactor modal layout and styling

* Reorder alphabetically

* Add ability images

* Add lazy loading for champions images

* Improve modal image responsiveness

* Add difficulty meter

* Lint HTML images

* Add League of Legends theme test

* Use ability description instead of tooltip

* Add champion roles

* Refactor modal CSS

Improve tags images resolution

Update README.md